Steam-generator.



G. CHRISTIANS.

STEAM GENERATOR;I APPLICATION FILED 00T. 13, 1911.

1,052,887. n Patented 11811.11, 1913.

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STEAM IGENERATOR. APPLICATION FILED 00T. 1s, 1911.

1&052887 Patented Feb. 11, 1913.

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Figi-Z e GQ CHRISTIANS.

- STEAM GENERATOR.

.j "/APPLIGATION FILED 00113, 1911.

1,059,887, E N Patented Feb.11,1913.

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CHRISTIAN CHRISTIANS, or BABMEN, GERMANY. l

STEAM-GENERATGR.

Specification of Letters Yatent.

Patented Febr di,

Application filed October 1.3,` 1911. Serial No. 654,473.

To all whom t may concern:

Be it known that I, CHRISTIAN Curtis TIANs, a citizen of the German Empire, residing at Barmen, in the Province of Rhenish Prussia, Kingdom of Prussia, Germany7 have'invented certain ,new and useful lmprovements in SteaniGcne1ators, of which the following is a specification.

The invention relates to steam generators, and more particularly to a steam generator in which the circulation of the water is arranged to take place ingcndless currents,

' that is to say, in pipes or tubes closed upon the furnace gases section through i the' eivaporating themselves and from which the steam is directly drawn, the water being introduced therein in the direction of circulation.

Another feature of the invention consists in providing a feed water heater for `the generator, which heater is so situated with respect to the steam generator proper, that flow for the greater part past the latter before reaching the former, and wherein one portion of the heater is so arranged that a free development of steam may take place therein.

In the .accompanying drawings which illustrate diagrammatically one form of the steam generator-Figure 1 is a longitudinal the vgenerator and setting, taken on the line 1-1, Fig. 3. Fig. '2 is a longitudinal section 'taken on the line 2-2, Fig. 3; and lFig. 3 is a transverse section taken'on the line 33, Fig. l.

Similar characters of reference designate corresponding parts throughout .the several views.

Referring pipes or tubes proper and which run steeply upward and are endless, that. is, closed -on themselves. At their upper bends they are provided with steam outlets c opening into the steam space of the top, drum b. Nozzles c enter the .upper ends of the inner Shanks of the pipes a; and through these nozzles the feed water is introduced inthe direction of the circulation of the water in said pipes a. The feed wavter is received from a feed water heat-er comprising pipe coils d and f, and hereinafter more fully described. ln the event of the'feed water being dirty, the steep pipes c `flows out directly from the circulating cuL to the drawings, a designates.

may be provided with outlets for the diiit, their lower bends being then placed iny a suitable cylinder or drum, as well understood.

With the arrangement of endless steep pipes ai, hereinbefore set forth, the quantity of circulating water is reduced to niinimum, and friction and eddies in the water avoided. flue. to fact that the rent of water and to the direct introduction of preheated water thrcughthe nozzles c, the percentage of water in the circulating current of water and steam is high. An en tremely lively circulation is also set up, and consequently a very high rate of evaporation in the evaporating pipes, because of the fact that the specific gravity. of the ascending current at a given place is smaller the nearer said place is to the outlets c. The introduction of preheated water into the descending current also assists the circulation. To heat this feed water, suitable independent sets of pipes ci and f are provided, and are situated in the path of the furnace gases behind the evaporating pipes a, the pipes furthermore, being located behind the pipes d. :in the example shown, the back pipes of each group are illustrated as located inhorizontal posit-ion, although they may be arranged vertically. These pipes f receive the water, in a direction counter to the flow of furnace gases, from two upper water' receptacles or ldrums g, which are fed from a pipe open into two lower water receptacles or drums el to which arevalso connected the pipes (Z. These latter pipes are arranged to so that any steam which ascend steeply,

can rise freely and col# may form therein lect in upper drums 7c, thus eecting a-'pow-.

the nozzles c of the.

it. Pipesf ating the desired quantity of steam.

'pipes a. The generator thus readily accommodates itself to various loads.

I claim z-f- 1. In a steam generator: a plurality of endless evaporating tubes provided with suitable steam outlets, and means to admit water to the individual tubes.

2. In. a steam generator: a plurality of endless evaporating tubes provided with.

suitable steam outlets, and means to admit Water to the individual tubes in the direction ofthe circulation set up by the heating of said Water. V

8. In a steam generator: a suitable steam drum, a plurality of endless evaporating tubes, one portion of the individual tubes opening into said steam drum, and means to admit Water to the individual tubes through that portion of the same located Within said drum.

4. The combination with a steam generator contiprising a plurality'of endless evaporating tubes provided with suitable steam outlets,'and means to admit Water to the individual tubes; of a preheating device for the feed Water, adapted to supplement the said generator, and communicating` with said means to admit Water to the individual tubes.

5. The combination Witha steam generator comprising a suitable steam drum., a plurality of endless evaporating tubes, one

` .portion of the individual tubes opening into said steam drunnand means to admit Water to the individual tubes through that portion of thesame located Within said drum; of a preheating device for the feed Water, adapt ed to supplement the said generator, and communicating with said means to admit Water to the individual tubes and with said steam drum.

6. The combination with a steam generator comprising a plurality of endless evaps orating tubes provided with suitable steam outlets, and means to admit Water to the in-- dividual tubes; of a preheating device for the feed Water, including a plurality of tubesh arranged close to one another to form a guide for the furnace gases, said tubes communicating With said means to admit Water to the said individual evaporating tubes.

7. The combination with a steam genen" ineens? ora-ting tubes provided with suitable outlets, and means to admit Water to the'individual tubes; Aof a prohosting device for the feed Water, including a plurality of tubes an ranged close to one another and formino a chamber for the furnace gases, said tulies communicating with said means to admit Water to the said individual evaporating tubes; and a super-heating device for the steam produced by said generator, located Within the chamber' formed by said feed water heater tubes and communicating with the steam outlets.

8. A steam generator comprising: a suit-- able steam drinn; a plurality of endless evaporat-ing tubes, one portion of the individual tubes opening into the said steam drum; am'ater supply drum; a series of pipe coils communicating therewith and in the path oft the furnace gases; a collecting drum communicating with said feed Water pipe coils; a discharge drum communicating with said feed Water pipe coils; means passing into said steam drum and connecting said discharge drum with the individual endless evaporating tubes to supply' Water thereto;

and means connecting said discharge drum with said steam drum to deliver steam of the former to the lat-ter. l

9. A. steam generator comprising; a suitable steam drum.' a luralitv of endless evaporating tubes, one portion of the individual tubes opening into said steam drum; an upper Water supply drum; a set/off .pipe coils at the rear of the furnace coininunicatn ing' therewith; collecting drum 'at the bottom of said furnace communicating Wit-h said pipe coils and extending to the front of said furnace; a plurality of ascending pipes communicating therewith at the forward portion Of the furnace; a discharge drum at the upper and forward portion of said furnace and communicating with said ascending pipes; means passing into said steam drum andv connecting said discharge drum with the individual endless evaporating tubes to supply Water thereto; and means connecting said discharge drum with the steam drum to deliver steam of the former to the latter.

l0. rlhe combination with a steam generator comprising a plurality of endless. evap' orating tubes provided with suitable steam outlets, and means to admit Water to the'individual tubes; of a preheating device for thc feed Water, and including a plurality of independent feed Water coils located inthe path of the furnace gases and suoli that the direction of iioW ot the feed Water there-U through is opposed to the direction of iloW of the said furnace gases.

1l. The combination With a steam generator comprising a' plurality of endless evaporatingrtubes provided with suitable steam outlets, and means to admit Water to the individual tubes; of a preheating device for the feed water, and including a plurality of independent feed Water coils located in the path of the furnace gases and such that z the direction of flow of the feed Water there- 'furnace than the said feed Water coils and 10 adapted to supplement said Steam generator.

n testimony whereof, I have signed my nume to this specifica-tion in the presence of two subscribing Witnesses.

CHRISTAN CHRISTIANS.

Witnesses:

L. Num, ALBERT Nomix. 

